Is this the correct coolant?
Yes you can mix it with Mopar a/f from 2005 truck... If in fact the original coolant is still in system . In case you don't know that coolant bottle in your pic appears to be concentrate so you can mix it 50/50 with distilled water to 2 gallons of anti freeze.
If your truck has original coolant then you are overdue for a coolant flush.
I just bought a 2008 Ram with 108K miles. Coolant looked OK and tested slightly acidic. I replaced the coolant and also put in new lower radiator hose at same time. The inside of the old hose was completely coated with a thin layer of grit.
I just bought a 2008 Ram with 108K miles. Coolant looked OK and tested slightly acidic. I replaced the coolant and also put in new lower radiator hose at same time. The inside of the old hose was completely coated with a thin layer of grit.
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Then you had best plan to drain and completely flush the entire system. Then you can put in whatever you want. (Mine are all running on Prestone now).



